4-O-acetyl-3-O-(4-O-acetyl-6-bromo-2,6-dideoxy-2-thiophenyl-β-D-glucopyranosyl)-6-bromo-2,6-dideoxy-D-arabino-hex-1-enitol 在
2,6-二叔丁基-4-甲基吡啶 、
trifluoromethanesulfonic acid anhydride 作用下,
以
二氯甲烷 为溶剂,
反应 1.17h,
生成 Acetic acid (2S,3S,4S,5R,6R)-4-((2S,4S,5S,6S)-4-acetoxy-5-azido-6-methyl-tetrahydro-pyran-2-yloxy)-6-((2S,3S,4S,5R)-3-acetoxy-2-bromomethyl-6-chloro-5-phenylsulfanyl-tetrahydro-pyran-4-yloxy)-2-bromomethyl-5-phenylsulfanyl-tetrahydro-pyran-3-yl ester